scholarly journals Development of a liquid crystal laser using a simple cubic liquid crystalline blue phase platform

RSC Advances ◽  
2019 ◽  
Vol 9 (56) ◽  
pp. 32922-32927
Author(s):  
Hyeon-Joon Choi ◽  
Jae-Hyun Bae ◽  
Sangwok Bae ◽  
Jae-Jin Lee ◽  
Hiroya Nishikawa ◽  
...  
Keyword(s):  
Liquid Crystalline ◽  
Room Temperature ◽  
Operating Temperature ◽  
Simple Cubic ◽  
Crystal Laser ◽  
Temperature Ranges ◽  
Blue Phase ◽  
Polymer Stabilized ◽  
Doped Polymer ◽  
Wide Operating

A dye-doped polymer-stabilized simple cubic liquid crystalline blue phase (BPII) laser with wide operating-temperature ranges over 15 °C including room temperature was fabricated.

Investigation of Polymer Stabilized Liquid Crystal Formation Using Fluorinated and Aliphatic Monoacrylates

2001 ◽  
Vol 709 ◽  
Author(s):  
Demetrius McCormick ◽  
C. Allan Guymon
Keyword(s):  
Liquid Crystal ◽  
Chemical Structure ◽  
Liquid Crystalline ◽  
Room Temperature ◽  
Smectic Phase ◽  
Crystal Formation ◽  
Polymerization Mechanism ◽  
Smectic Liquid Crystal ◽  
Before And After ◽  
Polymer Stabilized

ABSTRACTThis study focuses on the photo-polymerization of a fluorinated monoacrylate monomer and aliphatic analog within a room temperature smectic liquid crystal (LC) in an effort to understand how factors such as LC order, monomer segregation, and monomer chemical structure affects the polymerization mechanism in polymer stabilized liquid crystalline systems (PSLC). Specifically, a fluorinated monoacrylate exhibits significantly enhanced polymerization rates when compared to an aliphatic monoacrylate. Moreover, this rate enhancement is particularly pronounced in the smectic phase of the LC, where the fluorinated monoacrylate displays a polymerization rate in the smectic phase that is over three times faster than the aliphatic monoacrylate in the smectic phase. Also the fluorinated monoacrylate exhibits enhanced segregation between the smectic layers of the LC both before and after polymerization, whereas the aliphatic monoacrylate phase separates during polymerization. The results of this study demonstrate how changes in the monomer chemical structure (i.e. fluorination) can significantly impact the polymerization mechanism and segregation in polymer stabilized systems. This study also offers the potential to further the understanding of tailoring these unique systems for display applications.

scholarly journals Robust and monodomain-like polymer-stabilized simple cubic blue phase with red, green, and blue reflective colors

2017 ◽  
Vol 18 (4) ◽  
pp. 191-197 ◽  
Author(s):  
Jae-Hyun Bae ◽  
Byeong-Cheon Kim ◽  
Seong-Yong Jo ◽  
Suk-Won Choi
Keyword(s):  
Simple Cubic ◽  
Blue Phase ◽  
Polymer Stabilized

Topology-mediated electro-optical behaviour of a wide-temperature liquid crystalline amorphous blue phase

Soft Matter ◽  
2015 ◽  
Vol 11 (40) ◽  
pp. 8013-8018 ◽  
Author(s):  
Min Su Kim ◽  
Liang-Chy Chien
Keyword(s):  
Response Time ◽  
Liquid Crystalline ◽  
Optical Behaviour ◽  
Dark State ◽  
Blue Phase ◽  
Temperature Liquid ◽  
Polymer Stabilized

The polymer-stabilized amorphous blue phase manifests a tens of microseconds response time, a consistent achromatic dark state and it is intrinsically electro-optical hysteresis-free.

scholarly journals Fabrication of the liquid crystalline periodic waveguiding structures by means of the photo-polymerization process

2017 ◽  
Vol 9 (3) ◽  
pp. 82 ◽  
Author(s):  
Bartłomiej Turowski ◽  
Katarzyna Agnieszka Rutkowska
Keyword(s):  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Polymer Concentration ◽  
Polymerization Process ◽  
Nonlinear Phenomena ◽  
Photo Polymerization ◽  
Photonic Structures ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized

Photonic structures in a form of the waveguide channels, with periodic spatial changes in refractive index in the wavelength scale, are typically manufactured based on well-developed silica and gallium arsenide technology [1], as well as with use of the high-precision lithography. The main disadvantage related to practical application of such devices is that their optical properties cannot be altered after fabrication. Due to this fact, liquid crystalline periodic waveguiding structures, manufactured with use of the photo-polymerization process, have been proposed in this work. Importantly, propagational characteristic of such photonic structures can be easily adjusted during fabrication procedure, and then may be also dynamically tuned by e.g. applied external voltage, as presented in this communication. Full Text: PDF ReferencesM.J. Ablowitz, Z.H. Musslimani, "Discrete spatial solitons in a diffraction-managed nonlinear waveguide array: a unified approach", Physica D: Nonlinear Phenomena 184(1), 276 (2003). CrossRef L. Vicari, Optical applications of liquid crystals, CRC press, 2016. CrossRef J. Yan, S.-T. Wu, "Effect of Polymer Concentration and Composition on Blue Phase Liquid Crystals", J. Display Technol. 7, 9 (2011). CrossRef J. Schirmer et al., "Birefringence and Refractive Indices Dispersion of Different Liquid Crystalline Structures", Mol. Cryst. Liquid Cryst. 307, 17 (1997). CrossRef D. Xu et al., "Blue phase liquid crystals stabilized by linear photo-polymerization", Appl. Phys. Lett. 105, 8 (2014). CrossRef I. Dierking et al., "Stabilising liquid crystalline Blue Phases", Soft Matter 8, 4355 (2012). CrossRef K. Kang, L.C. Chien, S. Sprunt, "Polymer-stabilized cholesteric liquid crystal microgratings: a comparison of polymer network formation and electro-optic properties for mesogenic and non-mesogenic monomers", Liquid Crystals 29, 9 (2002). CrossRef K.A. Rutkowska, M. Chychłowski, U.A. Laudyn, "Polymer-stabilized periodic waveguiding structures in liquid crystalline materials", Proc. SPIE 10325 (2017). CrossRef

scholarly journals Tunable light beam steering device using polymer stabilized blue phase liquid crystals

2017 ◽  
Vol 9 (1) ◽  
pp. 11 ◽  
Author(s):  
Pankaj Joshi ◽  
Oliver Willekens ◽  
Xiaobing Shang ◽  
Jelle De Smet ◽  
Dieter Cuypers ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Liquid Crystalline ◽  
Beam Steering ◽  
Polymer Dispersed ◽  
Phase Liquid ◽  
Blue Phase ◽  
Blue Phases ◽  
Polymer Stabilized ◽  
Polarization Independent

A polarization independent and fast electrically switchable beam steering device is presented, based on a surface relief grating combined with polymer stabilized blue phase liquid crystals. Switching on and off times are both less than 2 milliseconds. The prospects of further improvements are discussed. Full Text: PDF ReferencesD.C. Wright, et al., "Crystalline liquids: the blue phases", Rev. Mod. Phys. 61, 385 (1989). CrossRef H. Kikuchi, et al., "Polymer-stabilized liquid crystal blue phases", Nat. Mater. 1, 64 (2002). CrossRef Samsung, Korea, SID exhibition, (2008).J. Yan, et al., "Direct measurement of electric-field-induced birefringence in a polymer-stabilized blue-phase liquid crystal composite", Opt. Express 18, 11450 (2010). CrossRef L. Rao, et al., "A large Kerr constant polymer-stabilized blue phase liquid crystal", Appl. Phys. Lett. 98, 081109 (2011). CrossRef Y. Hisakado, et al., "Large Electro-optic Kerr Effect in Polymer-Stabilized Liquid-Crystalline Blue Phases", Adv. Mater. 17, 96 (2005). CrossRef K. M. et al., "Submillisecond Gray-Level Response Time of a Polymer-Stabilized Blue-Phase Liquid Crystal", J. Disp. Technol. 6, 49 (2010). CrossRef Y. Chen, et al., "Level set based topology optimization for optical cloaks", Appl. Phys. Lett. 102, 251106 (2013). CrossRef H. Choi, et al., "Fast electro-optic switching in liquid crystal blue phase II", Appl. Phys. Lett. 98, 131905 (2011). CrossRef Y.H. Chen, et al., "Polarization independent Fabry-Pérot filter based on polymer-stabilized blue phase liquid crystals with fast response time", Opt. Express 19, 25441 (2011). CrossRef Y. Li, et al., "Polarization independent adaptive microlens with a blue-phase liquid crystal", Opt. Express 19, 8045 (2011). CrossRef C.T. Lee, et al., "Design of polarization-insensitive multi-electrode GRIN lens with a blue-phase liquid crystal", Opt. Express 19, 17402 (2011). CrossRef Y.T. Lin, et al., "Mid-infrared absorptance of silicon hyperdoped with chalcogen via fs-laser irradiation", J. Appl. Phys. 113, (2013). CrossRef J.D. Lin, et al., "Spatially tunable photonic bandgap of wide spectral range and lasing emission based on a blue phase wedge cell", Optics Express 22, 29479 (2014). CrossRef W. Cao, et al., "Lasing in a three-dimensional photonic crystal of the liquid crystal blue phase II", Nat. Mat. 1, 111 (2002). CrossRef S.T. Hur, et al., "Liquid-Crystalline Blue Phase Laser with Widely Tunable Wavelength", Adv. Mater. 25, 3002 (2013). CrossRef A. Mazzulla, et al., "Thermal and electrical laser tuning in liquid crystal blue phase I", Soft. Mater. 8, 4882 (2012). CrossRef C.W. Chen, et al., "Random lasing in blue phase liquid crystals", Opt. Express 20, 23978 (2012). CrossRef O. Willekens, et al., "Ferroelectric thin films with liquid crystal for gradient index applications", Opt. Exp. 24, 8088 (2016). CrossRef O. Willekens, et al., "Reflective liquid crystal hybrid beam-steerer", Opt. Exp. 24, 1541 (2016). CrossRef M. Jazbinšek, et al., "Characterization of holographic polymer dispersed liquid crystal transmission gratings", J. Appl. Phys. 90, 3831 (2001). CrossRef C.C. Bowley, et al., "Variable-wavelength switchable Bragg gratings formed in polymer-dispersed liquid crystals", Appl. Phys. Lett. 79, 9 (2001). CrossRef Y.Q. Lu, et al., "Polarization switch using thick holographic polymer-dispersed liquid crystal grating", Appl. Phys. 95, 810 (2004). CrossRef J.J. Butler et al., "Diffraction properties of highly birefringent liquid-crystal composite gratings", Opt. Lett. 25, 420 (2000). CrossRef R.L. Sutherland et al., "Electrically switchable volume gratings in polymer-dispersed liquid crystals", Appl. Phys. Lett. 64, 1074 (1994). CrossRef X. Shang, et al., "Electrically Controllable Liquid Crystal Component for Efficient Light Steering", IEEE Photo. J. 7, 1 (2015). CrossRef J. Yan, et al., "Extended Kerr effect of polymer-stabilized blue-phase liquid crystals", Appl. Phys. Lett. 96, 071105 (2010). CrossRef H.S. Chen, et al., "Hysteresis-free polymer-stabilized blue phase liquid crystals using thermal recycles", Opt. Mat. Exp. 2, 1149 (2012). CrossRef J. Yan. et al., "Dual-period tunable phase grating using polymer stabilized blue phase liquid crystal", Opt. Lett. 40, 4520 (2015). CrossRef H.S. Chen, et al., "Hysteresis-free polymer-stabilized blue phase liquid crystals using thermal recycles", Opt. Mat. Exp. 2, 1149 (2012). CrossRef H.C. Cheng, et al., "Blue-Phase Liquid Crystal Displays With Vertical Field Switching", J. Disp. Technol. 8, 98 (2012). CrossRef

Laser Emission from a Polymer-Stabilized Liquid-Crystalline Blue Phase

2006 ◽  
Vol 18 (1) ◽  
pp. 48-51 ◽  
Author(s):  
S. Yokoyama ◽  
S. Mashiko ◽  
H. Kikuchi ◽  
K. Uchida ◽  
T. Nagamura
Keyword(s):  
Liquid Crystalline ◽  
Laser Emission ◽  
Blue Phase ◽  
Polymer Stabilized

scholarly journals A reflective polarizer-free electro-optical switch using dye-doped polymer-stabilized blue phase liquid crystals

2011 ◽  
Vol 19 (3) ◽  
pp. 2556 ◽  
Author(s):  
Yi-Hsin Lin ◽  
Hung-Shan Chen ◽  
Tsung-Han Chiang ◽  
Chun-Hung Wu ◽  
Hsu-Kuan Hsu
Keyword(s):  
Liquid Crystals ◽  
Optical Switch ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized ◽  
Doped Polymer

scholarly journals A monodomain-like liquid-crystalline simple cubic blue phase II

2015 ◽  
Vol 16 (3) ◽  
pp. 155-160 ◽  
Author(s):  
Kibeom Kim ◽  
Sunhwan Kim ◽  
Seong-Yong Jo ◽  
Suk-Won Choi
Keyword(s):  
Phase Ii ◽  
Liquid Crystalline ◽  
Simple Cubic ◽  
Blue Phase

scholarly journals A well-aligned simple cubic blue phase for a liquid crystal laser

2015 ◽  
Vol 3 (21) ◽  
pp. 5383-5388 ◽  
Author(s):  
Kibeom Kim ◽  
Sung-Taek Hur ◽  
Sunhwan Kim ◽  
Seong-Yong Jo ◽  
Bo Ram Lee ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Phase Ii ◽  
Threshold Energy ◽  
Emission Wavelength ◽  
Simple Cubic ◽  
Crystal Laser ◽  
Blue Phase ◽  
Emission Threshold ◽  
Tunable Emission

A well-aligned dye-doped blue phase II laser shows tunable emission wavelength and much lower emission threshold energy.

P-149: A Reflective Polarizer-Free Display Using Dye-Doped Polymer-Stabilized Blue Phase Liquid Crystals

2011 ◽  
Vol 42 (1) ◽  
pp. 1667-1670
Author(s):  
Hung-Shan Chen ◽  
Tsung-Han Chiang ◽  
Chun-Hung Wu ◽  
Hung-Yuan Chen ◽  
Yi-Hsin Lin ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Phase Liquid ◽  
Blue Phase ◽  
Polymer Stabilized ◽  
Doped Polymer
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